CVE-2026-49106 CRM Perks CVE debrief

Who should care

Defenders, system administrators, and security teams responsible for managing WordPress installations and plugins should be aware of this vulnerability. They should assess their exposure, prioritize patching or mitigation efforts, and monitor for potential exploitation attempts.

Why it matters

CVE-2026-49106 is a critical unauthenticated PHP object injection vulnerability in the Integration for Contact Form 7 and Constant Contact plugin. Defenders should prioritize patching or mitigating this vulnerability to prevent potential code execution, data breaches, or other malicious activities. The vulnerability's critical severity and potential impacts necessitate immediate attention from system administrators and security teams.

• Potential code execution or arbitrary code injection.
• Possible data breaches or unauthorized data access.
• Risk of privilege escalation or unauthorized system modifications.
• Need for verification of patch deployment and system hardening.

Technical summary

The Integration for Contact Form 7 and Constant Contact plugin, version 1.1.6 and earlier, is vulnerable to unauthenticated PHP object injection. This vulnerability is tracked under CVE-2026-49106 and has a CVSS score of 9.8, indicating critical severity. The vulnerability allows attackers to inject malicious PHP objects, potentially leading to code execution, data breaches, or other malicious activities.

Defensive priority

Defenders should prioritize patching or mitigating this vulnerability as it could lead to code execution, data breaches, or other malicious activities.

Recommended defensive actions

• Patch or update the Integration for Contact Form 7 and Constant Contact plugin to a version beyond 1.1.6.
• Implement additional security measures to monitor and restrict interactions with the plugin.
• Review and harden the server and network configurations to prevent exploitation.

Evidence notes

The vulnerability was reported by [email protected] and is tracked under CWE-502. The CVSS score is 9.8, indicating critical severity.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.